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Topic 1, Flight Information
Background
You are developing a flight information consolidation service. The service retrieves flight
information from a number of sources and combines them into a single data set. The
consolidated flight information is stored in a SQL Server database. Customers can query
and retrieve the data by using a REST API provided by the service.
The service also offers access to historical flight information. The historical flight
information can be filtered and queried in an ad hoc manner.
The service runs on a Windows Azure Web Role. SSL is not used.
Business Requirements
A new data source for historical flight information is being developed by a
contractor located on another continent.
If a time zone is not specified, then it should be interpreted as Coordinated
Universal Time (UTC).
When you upgrade a service from a staging deployment to a production
deployment, the time that the service is unavailable must be minimized.
The default port must be used for HTTP.
Technical Requirements
The existing sources of flight information and the mechanism of exchange are listed below.
Blue Yonder Airlines provides flight information in an XML file.
Consolidated Messenger provides flight information in a Microsoft Access
database that is uploaded every 12 hours to the service using SFTP. The
company uses port 22 for SFTP.
Margie's Travel provides and consumes flight information using serialized
ADO.NET DataSets. Data is periodically synced between the service and Margie's
Travel.
Trey Research provides data from multiple sources serialized in proprietary binary
formats. The data must be read by using .NET assemblies provided by Trey
Research. The assemblies use a common set of dependencies. The current
version of the Trey Research assemblies is 1.2.0.0. All assemblies provided by
Trey Research are signed with a key pair contained in a file named Trey.snk,
which Trey Research also supplies.
The application specification requires that any third-party assemblies must have
strong names.
Application Structure
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You need to configure the Windows Azure service definition to enable Consolidated
Messenger to upload files.
What should you do? (To answer, drag the appropriate configuration items to the correct
location or locations. Each configuration item may be used once, more than once, or not at
all. You may need to drag the split bar between panes or scroll to view content.)
Question No : 1 DRAG DROP - (Topic 1)
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You need to recommend a data access technology to the contractor to retrieve data from
the new data source.
Which data access technology should you recommend?
A. LINQ to XML
B. ADO.NET Entity Framework
C. ADO.NET DataSets
D. WCF Data Services
Answer: D
Flight information data provided by Margie's Travel is updated both locally and remotely.
When the data is synced, all changes need to be merged together without causing any
data loss or corruption.
You need to implement the Sync() method in the MargiesTravelSync.es file.
What should you do? (To answer, drag the appropriate code segments to the correct
location or locations in the answer area. Each code segment may be used once, more than
once, or not at all. You may need to drag the split bar between panes or scroll to view
content.)
Question No : 3 - (Topic 1)
Question No : 4 DRAG DROP - (Topic 1)
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Answer:
Historical flight information data will be stored in Windows Azure Table Storage using the
FlightInfo class as the table entity.
There are millions of entries in the table. Queries for historical flight information specify a
set of airlines to search and whether the query should return only late flights. Results
should be ordered by flight name.
You need to specify which properties of the FlightInfo class should be used at the partition
and row keys to ensure that query results are returned as quickly as possible.
What should you do? (To answer, drag the appropriate properties to the correct location or
locations in the answer area. Each property may be used once, more than once, or not at
all. You may need to drag the split bar between panes or scroll to view content.)
Answer:
Question No : 5 DRAG DROP - (Topic 1)
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The service has been deployed to Windows Azure.
Trey Research has provided version 1.3.0.0 of the assembly to support a change in the
serialization format. The service must remain available during the transition to the new
serialization format.
You need to ensure that the service is using the new assembly.
Which configuration setting should you add to the web.config? (To answer, drag the
appropriate configuration elements to the correct location or locations in the answer area.
Each configuration element may be used once, more than once, or not at all. You may
need to drag the split bar between panes or scroll to view content.)
Question No : 6 DRAG DROP - (Topic 1)
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